Pit mud preparation system

Abstract

The application relates to a pit mud preparation system, which comprises a feeding device through which pit mud is fed, a first cutting device which cuts the pit mud, a first conveying device, a second cutting device which cuts the pit mud again, a second conveying device, a first stirring device which stirs the pit mud after adding water, a granulating device which prepares the pit mud into strips, a third conveying device, a second stirring device which stirs the pit mud again after adding water, and a forming box. The application can improve the uniformity of the pit mud when the pit mud is cut through the first cutting device and the second cutting device. The pit mud is stirred twice through the first stirring device and the second stirring device, and the pit mud is granulated again through the granulating device between the two times of water stirring, so that the soaking effect of the pit mud is improved, the phenomenon that the pit mud is dry and wet after water stirring is avoided, the stirring effect of the pit mud is guaranteed, and the quality of the prepared pit mud is guaranteed.

Description

Technical Field

[0001] This application relates to the field of pit mud preparation technology, and in particular to a pit mud preparation system. Background Technology

[0002] In the production of baijiu (Chinese liquor), sealing the fermentation pits is a crucial step. For sauce-flavored baijiu, pit mud is used for sealing. This mud not only provides a seal but also creates a suitable environment for the fermentation of brewing microorganisms. Traditionally, pit mud is prepared manually, involving multiple steps such as chopping, soaking in water, tamping, and draining, to obtain a mud-like consistency. While automated systems exist that complete these steps, reducing labor intensity and increasing efficiency compared to manual methods, the quality of pit mud prepared by these systems is often compromised due to uneven chopping, uneven soaking, and inadequate mixing. Summary of the Invention

[0003] Based on this, this application provides a pit mud preparation system to improve the problem of poor pit mud preparation quality in the prior art.

[0004] This application provides a pit mud preparation system, the pit mud preparation system comprising:

[0005] The feeding device is used to feed the pit mud.

[0006] The first cutting device has its inlet connected to the outlet of the feeding device, and the first cutting device cuts the pit mud into fine pieces.

[0007] The first conveying device has its inlet connected to the outlet of the first cutting device;

[0008] The second cutting device has its inlet connected to the outlet of the first conveying device, and the second cutting device cuts the pit mud into smaller pieces for a second time.

[0009] The inlet of the second conveying device is connected to the outlet of the second cutting device;

[0010] The first stirring device has its inlet connected to the outlet of the second conveying device, and the first stirring device adds water to the pit mud and stirs it.

[0011] The granulation device has its inlet connected to the outlet of the first stirring device, and the granulation device prepares the pit mud into strips.

[0012] The third conveying device has its inlet connected to the outlet of the granulation device;

[0013] The second stirring device has its inlet connected to the outlet of the third conveying device. The second stirring device adds water to the pit mud and stirs it a second time.

[0014] A molding box is connected to the discharge port of the second mixing device, and the pit mud is formed inside the molding box.

[0015] In one embodiment, the granulation device is an extrusion granulator, and includes a granulation head with a plurality of extrusion ports; when the silt is discharged from the extrusion ports due to compression, the silt is broken into strip-shaped particles under its own weight.

[0016] In one embodiment, the silt preparation system further includes a water supply device. Two sets of water supply devices are provided, corresponding to the first stirring device and the second stirring device respectively. The water supply device includes a water supply pipe and a control valve. The water supply pipe is connected to a water source, and the control valve is provided on the water supply pipe. The outlet of the water supply pipe is connected to the feed inlet of the first stirring device or the second stirring device.

[0017] In one embodiment, the silage preparation system further includes a dust removal device, which includes a dust removal pipe and a pulse dust removal mechanism. The dust removal pipe is connected to the pulse dust removal mechanism and is provided with an air outlet that connects the first cutting device and the second cutting device.

[0018] In one embodiment, the dust removal pipe is further provided with an air vent that connects to the feed inlet of the first stirring device.

[0019] In one embodiment, the first conveying device and the second conveying device extend in the same direction, and the three air outlets of the dust removal duct are arranged on the same path.

[0020] In one embodiment, the feeding device is a plate chain conveyor, and the first conveying device, the second conveying device, and the third conveying device are all belt conveyors.

[0021] In one embodiment, the widths of the first conveying device and the second conveying device are greater than the width of the third conveying device.

[0022] In one embodiment, both the first cutting device and the second cutting device are mud cutters.

[0023] In one embodiment, both the first stirring device and the second stirring device are twin-shaft mixers.

[0024] This application uses a first cutting device and a second cutting device to cut the pit mud twice, which can improve the uniformity of the pit mud when it is cut into fine pieces; and uses a first stirring device and a second stirring device to add water and stir the pit mud twice, while using a granulation device to re-granulate between the two water additions and stirrings, which can improve the wetting effect of the pit mud and avoid the phenomenon of dry and wet mixing after water addition and stirring, thus ensuring the stirring effect of the pit mud; therefore, this application can ensure the quality of the prepared pit mud. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a pit mud preparation system provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the granulation head of the granulation device of the sludge preparation system provided in an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the water addition device for a mud preparation system provided in an embodiment of this application.

[0028] Reference numerals: 100, feeding device; 200, first cutting device; 300, first conveying device; 400, second cutting device; 500, second conveying device; 600, first mixing device; 700, granulation device; 710, granulation head; 720, extrusion port; 800, third conveying device; 900, second mixing device; 110, forming box; 120, water adding device; 121, water adding pipe; 122, control valve; 130, dust removal device; 131, dust removal pipeline; 132, pulse dust removal mechanism; 133, air outlet; 134, first pipeline; 135, second pipeline. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention.

[0031] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0032] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] This application provides a system for preparing pit mud, such as... Figures 1 to 3 As shown, the pit mud preparation system includes:

[0034] Feeding device 100, the pit mud is fed through feeding device 100;

[0035] The first cutting device 200 has its inlet connected to the outlet of the feeding device 100, and the first cutting device 200 cuts the pit mud into fine pieces.

[0036] The inlet of the first conveying device 300 is connected to the outlet of the first cutting device 200;

[0037] The second cutting device 400 has its inlet connected to the outlet of the first conveying device 300, and the second cutting device 400 cuts the pit mud into smaller pieces for a second time.

[0038] The inlet of the second conveying device 500 is connected to the outlet of the second cutting device 400;

[0039] The first mixing device 600 has its inlet connected to the outlet of the second conveying device 500. The first mixing device 600 mixes the pit mud with water.

[0040] The granulation device 700 has its inlet connected to the outlet of the first mixing device 600, and the granulation device 700 prepares the pit mud into strips.

[0041] The third conveying device 800 has its inlet connected to the outlet of the granulation device 700;

[0042] The second mixing device 900 has its inlet connected to the outlet of the third conveying device 800. The second mixing device 900 adds water to the pit mud and mixes it a second time.

[0043] The molding box 110 is connected to the discharge port of the second mixing device 900, and the pit mud is formed inside the molding box 110.

[0044] like Figure 1As shown in this embodiment, the feeding device 100 is used to feed dry pit mud, which is then fed to the first cutting device 200. The dry pit mud is in block form and is relatively large in size, and can be fed into the feeding device 100 by equipment such as a forklift.

[0045] The first cutting device 200 is used to initially cut the larger-sized dry pit mud into finer pieces to obtain granular or powdery dry pit mud, which facilitates soaking and mixing.

[0046] like Figure 1 As shown, the second cutting device 400 is used to further cut the finely chopped dry pit mud to increase the uniformity of the particle size of the finely chopped dry pit mud. The first conveying device 300 is used to convey the dry pit mud from the first cutting device 200 to the second cutting device 400, and it is arranged between the first cutting device 200 and the second cutting device 400.

[0047] The first mixing device 600 is used to add water and mix the dried pit mud after secondary chopping. After adding water, the dried pit mud is moistened, and then through mixing, a wet and loose pit mud is obtained. The second conveying device 500 is used to convey the dried pit mud after secondary chopping from the second cutting device 400 to the first mixing device 600, and it is located between the second cutting device 400 and the first mixing device 600.

[0048] like Figure 1 As shown, the granulation device 700 is used to prepare the initially impregnated and stirred wet loose pit mud into strips, that is, to re-granulate the wet loose pit mud. It should be noted that after the initial impregnation, some pit mud may still be relatively dry and the impregnation effect may not be good. In this case, the pit mud is initially stirred, and the internal mixture of dry and wet pit mud still exists. By re-granulating the pit mud after initial stirring, the dry and wet pit mud can be redispersed. In the process of redispersing the pit mud, the pit mud can be separated from each other in the relatively dry areas, thereby achieving dispersion and exposing the relatively dry parts.

[0049] The second mixing device 900 is used to add water to the re-granulated pit mud and perform secondary mixing. Since the pit mud is redispersed and the relatively dry parts are exposed, when water is added for secondary wetting, the drier parts of the pit mud can be moistened; in other words, after secondary wetting, the pit mud has a more uniform wetness and is less prone to localized over-wetting, thus ensuring the effectiveness of the secondary wetting. Furthermore, during the subsequent secondary mixing process, the more uniform wetness of the pit mud also ensures the effectiveness of the secondary mixing, thereby guaranteeing the quality of the pit mud preparation. The third conveying device 800 is used to convey the re-granulated pit mud from the granulation device 700 to the second mixing device 900, and it is positioned between the granulation device 700 and the second mixing device 900.

[0050] like Figure 1 As shown, the molding box 110 is used to load the pit mud after secondary mixing. After the pit mud is discharged from the outlet of the second mixing device 900, it falls into the molding box 110. Through the limiting and compression of the side walls of the molding box 110, the pit mud can be prepared into the desired shape.

[0051] It is understood that this application uses the first cutting device 200 and the second cutting device 400 to cut the pit mud twice, which can improve the uniformity of the pit mud when it is cut into fine pieces; and the first stirring device 600 and the second stirring device 900 add water and stir the pit mud twice, while the granulation device 700 re-granulates it between the two water additions and stirrings, which can improve the wetting effect of the pit mud and avoid the phenomenon of dry and wet mixing after water addition and stirring, thus ensuring the stirring effect of the pit mud; thereby, this application can ensure the quality of the prepared pit mud.

[0052] Specifically, the granulation device 700 is an extrusion granulator and includes a granulation head 710, which is provided with a plurality of extrusion ports 720. When the pit mud is discharged from the extrusion ports 720 due to compression, the pit mud is broken into strip-shaped particles under its own weight.

[0053] like Figure 1 and Figure 2As shown in this embodiment, when the granulation device 700 is an extrusion granulator, it can extrude the pit mud to discharge it from the outlet of the granulation head 710. The granulation head 710 can be cylindrical and can be configured as a rotating body with its axis horizontally arranged, one end open and the other end closed. During discharge, the pit mud enters the granulation head 710 from the open end and is compressed towards the closed end of the granulation head 710. A plurality of extrusion ports 720 can be formed on the side wall of the granulation head 710 and penetrate the side wall of the granulation head 710. When the pit mud fills the granulation head 710 and continues to be compressed, the pit mud can be discharged from the extrusion ports 720. Since the pit mud has a certain viscosity after being soaked and stirred once, it will be prepared into strips during the discharge process and will hang downwards due to its own weight. When the weight of a certain part of the pit mud exceeds the bonding force between that part and the rest, that part of the pit mud will separate from the rest; in other words, that part of the pit mud will be broken by its own weight, thus forming strip-shaped particles.

[0054] The drier the pit mud, the weaker its binding force, making it easier to break, and ensuring the breakage occurs in drier areas. Consequently, the particle size of the broken mud is smaller, exposing drier areas more easily. Furthermore, this smaller particle size allows water to penetrate more easily during secondary wetting and mixing, ensuring effective wetting and subsequent mixing. Conversely, when the pit mud has suitable moisture content, its greater binding force makes dispersion difficult, resulting in larger particle sizes. This larger particle size also makes it less prone to water penetration during secondary wetting and mixing, reducing the likelihood of over-wetting and affecting viscosity.

[0055] It is understood that in this embodiment, by setting the granulation device 700 as an extrusion granulator and setting a granulation head 710, the pit mud is discharged from several extrusion ports 720 by extrusion. At the same time, the pit mud is broken under its own weight. The particle size of the granulated pit mud can be automatically matched according to the dryness and wetness of the pit mud after one soaking and stirring, thereby further improving the preparation quality of the pit mud.

[0056] More specifically, several extrusion nozzles 720 have at least two shapes.

[0057] like Figure 1 and Figure 2As shown in this embodiment, by way of example, a plurality of extrusion ports 720 are arranged in rows on the sidewall of the pelletizing head 710, and the extending direction can be the axial direction of the pelletizing head 710. The extrusion ports 720 can be arranged in several rows, and each row of extrusion ports 720 adopts the same shape, while the shapes of adjacent rows of extrusion ports 720 can be set differently. The shape of the extrusion ports 720 can include triangles, rectangles, trapezoids, and circles, etc. This embodiment uses triangles, rectangles, trapezoids, and circles as examples for illustration.

[0058] Understandably, when the pit mud is discharged from the extrusion port 720, the different shapes of the outlet allow it to be squeezed at varying angles or forces, resulting in strip-shaped particles with different outer surfaces in terms of size, shape, and angle. For example, a circular extrusion port 720 can make the outer surface of the particles curved, while a triangular extrusion port 720 can make the outer surface of the particles include three planes with an angle of 60 degrees between each pair of particles. When the strip-shaped particles form outer surfaces with different sizes, shapes, and angles, the diversity of particle size is further increased. This not only effectively prevents the strip-shaped particles from re-adhering but also increases the possibility of gaps forming between them, thus facilitating secondary impregnation of the pit mud with strip-shaped particles.

[0059] Specifically, the silage preparation system also includes a water supply device 120. Two sets of water supply devices 120 are provided, corresponding to the first stirring device 600 and the second stirring device 900 respectively. The water supply device 120 includes a water supply pipe 121 and a control valve 122. The water supply pipe 121 is connected to a water source, and the control valve 122 is installed on the water supply pipe 121. The outlet of the water supply pipe 121 is connected to the feed inlet of the first stirring device 600 or the second stirring device 900.

[0060] like Figure 1 and Figure 3 As shown in this embodiment, by way of example, two sets of water-adding devices 120 are used to add water to the first stirring device 600 and the second stirring device 900, respectively. The water-adding pipe 121 is connected to a water source, which can be a reservoir or similar device, storing liquid for preparing pit mud. The outlet of the water-adding pipe 121 extends to the inlet of the first stirring device 600 and the second stirring device 900, and a control valve 122 is provided at the outlet. The control valve 122 can control the opening and closing of the outlet. When the control valve 122 controls the outlet of the water-adding pipe 121 to open, the liquid for preparing pit mud can be dripped into the first stirring device 600. The water volume can be adjusted by controlling the opening and closing time of the outlet of the water-adding pipe 121. It should be noted that the amount of water added by the first stirring device 600 and the second stirring device 900 when stirring the pit mud can be selected according to actual needs.

[0061] It is understood that this embodiment provides a water-adding device 120, which is configured as a water-adding pipe 121 and a control valve 122, to facilitate the addition of water when the first stirring device 600 and the second stirring device 900 are stirring the pit mud, making it convenient and quick.

[0062] Specifically, the silage preparation system also includes a dust removal device 130, which includes a dust removal pipe 131 and a pulse dust removal mechanism 132. The dust removal pipe 131 is connected to the pulse dust removal mechanism 132 and is provided with an air outlet 133 that connects to the first cutting device 200 and the second cutting device 400.

[0063] like Figure 1 As shown in this embodiment, the pulse dust removal mechanism 132 is the main functional component of the dust removal device 130. It is used to adsorb and collect dust generated during the cutting process of the first cutting device 200 and the second cutting device 400, so as to achieve centralized treatment. The pulse dust removal mechanism 132 is connected to the first cutting device 200 and the second cutting device 400 through a dust removal pipe 131. The dust removal pipe 131 is provided with an air vent 133 extending to the inlet of the first cutting device 200 and the second cutting device 400. The air vent 133 is used to allow dust generated during the cutting process of the first cutting device 200 and the second cutting device 400 to enter the dust removal pipe 131.

[0064] It is understood that by setting up a dust removal device 130 and extending the air outlet 133 of the dust removal pipe 131 of the dust removal device 130 to the first cutting device 200 and the second cutting device 400, this embodiment can avoid the dust generated during the cutting process of the first cutting device 200 and the second cutting device 400 from affecting the environment of the mud preparation system and ensure the production safety of relevant operators.

[0065] More specifically, the dust removal pipe 131 is also provided with an air outlet 133 that connects to the discharge port of the first stirring device 600.

[0066] like Figure 1As shown in this embodiment, it is exemplarily illustrated that the second stirring device 900 adds water and stirs the re-granulated pit mud, which has undergone preliminary soaking and stirring; while the first stirring device 600 adds water and stirs the secondary-cut dry pit mud, which is still in granular or powdery form. Therefore, the second stirring device 900 is less likely to generate dust during the water-adding and stirring process, while the first stirring device 600, although the liquid can reduce dust to some extent during the water-adding and stirring process, cannot completely eliminate the occurrence of this phenomenon. In view of this, the air outlet 133 of the dust removal pipe 131 also extends to the feed inlet of the first stirring device 600 to adsorb and collect dust when the secondary-cut dry pit mud enters the first stirring device 600.

[0067] It is understood that by setting the air outlet 133 of the dust removal pipe 131 along the feed inlet of the first mixing device 600, this embodiment can also reduce the dust generated when the first mixing device 600 adds water to the dry pit mud after secondary chopping, so as to further improve the production environment.

[0068] More specifically, the first conveying device 300 and the second conveying device 500 extend in the same direction, and the three air outlets 133 of the dust removal duct 131 are arranged on the same path.

[0069] like Figure 1 As shown in this embodiment, it is exemplarily illustrated that the same extension direction of the first conveying device 300 and the second conveying device 500 can be understood as follows: from a top-down perspective, the length direction of both the first conveying device 300 and the second conveying device 500 can be the first direction, that is, extending along the first direction. In the vertical plane, both the first conveying device 300 and the second conveying device 500 can be inclined according to actual needs. The aforementioned arrangement facilitates the proximity of the inlet of the first conveying device 300 to the outlet of the first cutting device 200, and also facilitates the proximity of the outlet of the first conveying device 300 to the inlet of the second cutting device 400; the same applies to the second conveying device 500.

[0070] The dust removal duct 131 may include a first duct 134 and a second duct 135. The first duct 134 may extend along a first direction, and the second duct 135 may be disposed within a first vertical section, with the first direction intersecting the first vertical section, specifically perpendicular to it. The first duct 134 and the second duct 135 are connected, and the connection point may be located in the middle of the first duct 134. The end of the first duct 134 away from the second duct 135 is connected to the pulse dust removal mechanism 132, and three air outlets 133 may be respectively disposed at both ends and the middle of the second duct 135, so that the second duct 135 is connected to the feed inlets of the first cutting device 200, the second cutting device 400, and the first mixing device 600; at this time, the three air outlets 133 of the dust removal duct 131 are all located on the second duct 135, that is, disposed on the same path.

[0071] It is understood that by setting the three air outlets 133 of the dust removal pipe 131 on the same path, this embodiment can simplify the extension path of the dust removal pipe 131, so that the pulse dust removal device 130 can adsorb the dust at the first cutting device 200, the second cutting device 400 and the first stirring device 600 with a shorter path; at the same time, it can make the overall layout of the pit mud preparation system more compact.

[0072] Specifically, the feeding device 100 is a plate chain conveyor, and the first conveying device 300, the second conveying device 500 and the third conveying device 800 are all belt conveyors.

[0073] like Figure 1 As shown in this embodiment, it is exemplarily illustrated that the pit mud is in block form and relatively large in size when it is fed; after passing through the first cutting device 200 and the second cutting device 400, it becomes granular or powdery; and after passing through the shaping device, it is re-granulated into strips. Therefore, the conveying device needs to ensure strong load-bearing capacity during the feeding process of the pit mud, while the conveying device needs to ensure that the material residue on the conveying device is reduced during the process of being sent to the second cutting device 400, the first mixing device 600 and the second mixing device 900. In view of this, the feeding device 100 can be set as a plate chain conveyor, which is not easily deformed by pressure when carrying blocky pit mud; and the first conveying device 300, the second conveying device 500 and the third conveying device 800 can all be belt conveyors, whose conveying belts have a better conveying effect on granular or powdery pit mud.

[0074] It is understood that this embodiment, through the reasonable setting of the conveying device, facilitates the transport of pit mud in different states to the designated functional device, so that the functional device can further process the pit mud.

[0075] More specifically, the width of the first conveying device 300 and the second conveying device 500 is greater than the width of the third conveying device 800.

[0076] like Figure 1 As shown in this embodiment, the first conveying device 300 and the second conveying device 500 both convey granular or powdery dry pit mud. Granular or powdery dry pit mud is unstable when piled up and may roll off. The third conveying device 800 conveys pit mud that has been re-granulated, which is easier to keep stable when piled up. Therefore, to prevent pit mud from falling outside the conveying devices during the conveying process, the widths of the first conveying device 300 and the second conveying device 500 can be made wider.

[0077] It is understood that by increasing the width of the first conveying device 300 and the second conveying device 500, this embodiment can reduce the possibility of pit mud falling during the conveying process, thereby avoiding waste of pit mud; at the same time, it can avoid cleaning the production environment and reduce labor intensity.

[0078] Specifically, both the first cutting device 200 and the second cutting device 400 are mud cutters.

[0079] like Figure 1 As shown in this embodiment, the mud cutter is an automatic cutting device for pit mud. Its specific structure and shape can be referred to in the patent document with application number 202220462123.7, which discloses a pit mud cutting machine that can quickly crush and cut dry pit mud.

[0080] Specifically, both the first stirring device 600 and the second stirring device 900 are twin-shaft mixers.

[0081] like Figure 1 As shown in this embodiment, by way of example, a twin-shaft mixer is a mixer with two parallel and spaced-apart mixing shafts. By rationally arranging the mixing blades on the two mixing shafts, the mud can be evenly moistened during the water mixing process, that is, it can be soaked, thereby achieving a better mixing effect.

[0082] The implementation principle of the pit mud preparation system provided in this application embodiment is as follows:

[0083] In the preparation process, lumpy dry pit mud is first fed into the feeding device 100 by a forklift, and then conveyed to the first cutting device 200. The first cutting device 200 then cuts the lumpy pit mud into granular or powdery dry pit mud, which is then conveyed to the second cutting device 400 via the first conveying device 300 for secondary cutting. The secondary-cut dry pit mud is then conveyed to the first mixing device 600 via the second conveying device 500, where water is added via a set of water-adding devices 120, and the pit mud is then stirred by the first mixing device 600. Finally, the pit mud, after initial water addition and stirring, is re-granulated by the granulation device 700 and prepared into strips. The re-granulated pit mud is then conveyed to the second mixing device 900 via the third conveying device 800, and water is added via another set of water adding devices 120. The second mixing device 900 then mixes the re-granulated pit mud. Finally, the pit mud, after being mixed and watered twice, is shaped into the desired shape via the molding box 110.

[0084] This application uses a first cutting device 200 and a second cutting device 400 to cut the pit mud twice, which can improve the uniformity of the pit mud when it is cut into fine pieces. The first stirring device 600 and the second stirring device 900 add water and stir the pit mud twice, and the granulation device 700 re-granulates the pit mud between the two water additions and stirrings, which can improve the wetting effect of the pit mud and avoid the phenomenon of dry and wet mixing after water addition and stirring, thus ensuring the stirring effect of the pit mud. Therefore, this application can ensure the quality of the prepared pit mud.

[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A system for preparing pit mud, characterized in that, The pit mud preparation system includes: Feeding device (100), through which pit mud is fed; The first cutting device (200) has its inlet connected to the outlet of the feeding device (100), and the first cutting device (200) cuts the pit mud into fine pieces; The first conveying device (300) has its inlet connected to the outlet of the first cutting device (200); The second cutting device (400) has its inlet connected to the outlet of the first conveying device (300), and the second cutting device (400) cuts the pit mud into smaller pieces for a second time. The second conveying device (500) has its inlet connected to the outlet of the second cutting device (400); The first stirring device (600) has its inlet connected to the outlet of the second conveying device (500), and the first stirring device (600) adds water to the pit mud and stirs it. The granulation device (700) has its inlet connected to the outlet of the first stirring device (600), and the granulation device (700) prepares the pit mud into strips; The third conveying device (800) has its inlet connected to the outlet of the granulation device (700); The second stirring device (900) has its inlet connected to the outlet of the third conveying device (800), and the second stirring device (900) adds water to the pit mud for secondary stirring; A molding box (110) is connected to the discharge port of the second stirring device (900), and the pit mud is formed inside the molding box (110).

2. The pit mud preparation system according to claim 1, characterized in that, The granulation device (700) is an extrusion granulator and includes a granulation head (710) with a plurality of extrusion ports (720) on the granulation head (710); when the silt is discharged from the extrusion ports (720) due to compression, the silt is broken into strip-shaped particles under its own weight.

3. The pit mud preparation system according to claim 1, characterized in that, The silage preparation system also includes a water supply device (120). Two sets of water supply devices (120) are provided, corresponding to the first stirring device (600) and the second stirring device (900) respectively. The water supply device (120) includes a water supply pipe (121) and a control valve (122). The water supply pipe (121) is connected to a water source. The control valve (122) is installed on the water supply pipe (121). The outlet of the water supply pipe (121) is connected to the feed inlet of the first stirring device (600) or the second stirring device (900).

4. The pit mud preparation system according to claim 1, characterized in that, The mud preparation system further includes a dust removal device (130), which includes a dust removal pipe (131) and a pulse dust removal mechanism (132). The dust removal pipe (131) is connected to the pulse dust removal mechanism (132) and is provided with an air outlet (133) that connects the first cutting device (200) and the second cutting device (400).

5. The pit mud preparation system according to claim 4, characterized in that, The dust removal pipe (131) is also provided with an air outlet (133) that connects to the feed inlet of the first stirring device (600).

6. The pit mud preparation system according to claim 5, characterized in that, The first conveying device (300) and the second conveying device (500) extend in the same direction, and the three air outlets (133) of the dust removal pipe (131) are arranged on the same path.

7. The pit mud preparation system according to claim 1, characterized in that, The feeding device (100) is a plate chain conveyor, and the first conveying device (300), the second conveying device (500) and the third conveying device (800) are all belt conveyors.

8. The pit mud preparation system according to claim 7, characterized in that, The width of the first conveying device (300) and the second conveying device (500) is greater than the width of the third conveying device (800).

9. The pit mud preparation system according to claim 1, characterized in that, Both the first cutting device (200) and the second cutting device (400) are mud cutters.

10. The pit mud preparation system according to claim 1, characterized in that, Both the first stirring device (600) and the second stirring device (900) are twin-shaft mixers.

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